Patents by Inventor Yuki Hokari

Yuki Hokari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210095164
    Abstract: A tape cassette includes a tape, a transparent cover film, and an ink ribbon. The tape has a thickness in a thickness direction and a width in a width direction. The tape is configured of a plurality of laminated layers including: a transparent base layer; a background layer having a width smaller than the width of the tape in the width direction; and a release layer constituting one surface of the tape in the thickness direction. The transparent cover film is to be bonded to the tape. The ink ribbon contains ink to be transferred to one of the tape and the cover film.
    Type: Application
    Filed: September 13, 2020
    Publication date: April 1, 2021
    Inventors: Shohei Tsuchimori, Yuki Hokari, Chie Nakashima, Takahiro Norimatsu
  • Publication number: 20210031546
    Abstract: A tape cassette used for a printer includes a thermal head and a cassette holder to which the tape cassette is attachable. The tape cassette includes a tape roll, a casing, a regulation guide and a pressure member. The tape roll is formed by winding a tape. The tape has a width defining a widthwise direction. The casing accommodates therein the tape roll. A tape conveying passage is defined in the casing. The regulation guide is positioned at the tape conveying passage to restrict displacement of the tape in the widthwise direction. The pressure member is positioned upstream of the regulation guide in a conveying direction of the tape and along the tape conveying passage. The pressure member is in contact with the tape in a contacting direction to apply pressing force to the tape in the contacting direction.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 4, 2021
    Inventors: Shota Iijima, Yuki Hokari, Satoru Ito, Masaya Fujita
  • Publication number: 20200406647
    Abstract: A tape cassette includes: a tape roll which is a roll of a tape wound about an axis extending in a first direction; and a nipping member configured to nip the tape conveyed in a second direction in cooperation with a conveying roller of a printing device. The nipping member includes: a first region configured to face one end portion of the tape; a second region configured to face another end portion of the tape; and a third region positioned between the first region and the second region. The first region and an imaginary reference surface provide a first length in a third direction. The second region and the imaginary reference surface provide a second length in the third direction. The third region and the imaginary reference surface provide a third length in the third direction. The third length is greater than the first length and the second length.
    Type: Application
    Filed: March 30, 2020
    Publication date: December 31, 2020
    Inventors: Yuki Hokari, Shota Iijima, Masaya Fujita, Satoru Ito
  • Patent number: 8318837
    Abstract: A method of controlling a moisture resistance of polyglycolic acid resin, by controlling a total carboxyl group-source concentration including a contribution of residual glycolide. As a result, a moisture resistance governing the change of strength with time of the polyglycolic acid resin is controlled at a good accuracy.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: November 27, 2012
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Yuki Hokari, Kazuyuki Yamane, Fuminori Kobayashi
  • Patent number: 8293826
    Abstract: An aliphatic polyester resin composition of improved moisture resistance formed by adding a phosphoric or phosphorous acid ester having a basicity of at most 1.4 of a saturated aliphatic alcohol having 8-24 carbon atoms.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: October 23, 2012
    Assignee: Kureha Corporation
    Inventors: Yuki Hokari, Tsukasa Ikeda, Kazuyuki Yamane
  • Publication number: 20120178870
    Abstract: An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the aromatic polyester resin is an aromatic polyester resin polymerized with an antimony compound (catalyst), the polyglycolic acid resin is a polyglycolic acid resin obtained by ring-opening polymerization of glycolide, and the composition further contains a metal-deactivating agent in a proportion of 17-500 mol. % with respect to the antimony in the aromatic polyester resin. As a result, gas generation during the melt-processing of a composition obtained by adding a relatively small amount of polyglycolic acid resin to an aromatic polyester resin is effectively suppressed to provide an aromatic polyester resin composition with a good gas-barrier property.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 12, 2012
    Inventors: Hiroyuki SATO, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi
  • Patent number: 8163866
    Abstract: An aromatic polyester resin composition, including: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the aromatic polyester resin is an aromatic polyester resin polymerized with a germanium compound (catalyst), and the polyglycolic acid resin is a polyglycolic acid resin obtained by ring-opening polymerization of glycolide. As a result, gas generation during the melt-processing of a composition obtained by adding a relatively small amount of polyglycolic acid resin to an aromatic polyester resin is effectively suppressed to provide an aromatic polyester resin composition with a good gas-barrier property.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: April 24, 2012
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi
  • Patent number: 8133955
    Abstract: An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 weight parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the composition is characterized by a transesterification rate CTE (%) of 20-60% determined by formula (1) below based on a peak integration ratio of methylene group in polyglycolic acid appearing at ?4.87 ppm with reference to tetramethylsilane according to 1H-NMR measurement: CTE (%)=(1?I(B)/I(A))×100??(1), wherein I (A): a peak integration ratio of the methylene group of the polyglycolic acid main chain with respect to the alkylene group of the aromatic polyester main chain calculated from the components weight ratio; and I (B): a peak integration ratio of the methylene group of polyglycolic acid main chain to the alkylene group of the aromatic polyester main chain in the resin composition.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: March 13, 2012
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi, Toshihiko Ono
  • Publication number: 20110108185
    Abstract: There is provided a laminate sheet which is excellent in oxygen-barrier property and moisture resistance, biodegradable as a whole and therefore suitable as a base material for packaging materials, such as food containers. The laminate sheet is formed by laminating a water-containable and biodegradable polymer substrate sheet or a precursor thereof in a water-containing state with a layer of polyglycolic acid resin having a residual monomer content below 0.5 wt. % to form a laminate, and subjecting the laminate to bonding and forming under heat and pressure.
    Type: Application
    Filed: January 18, 2011
    Publication date: May 12, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Yuki HOKARI, Kazuyuki YAMANE, Juichi WAKABAYASHI, Takehisa SUZUKI
  • Publication number: 20110105699
    Abstract: An aromatic polyester resin composition, including: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the aromatic polyester resin is an aromatic polyester resin polymerized with a germanium compound (catalyst), and the polyglycolic acid resin is a polyglycolic acid resin obtained by ring-opening polymerization of glycolide. As a result, gas generation during the melt-processing of a composition obtained by adding a relatively small amount of polyglycolic acid resin to an aromatic polyester resin is effectively suppressed to provide an aromatic polyester resin composition with a good gas-barrier property.
    Type: Application
    Filed: January 22, 2008
    Publication date: May 5, 2011
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi
  • Publication number: 20110045235
    Abstract: A method for manufacturing a porous polymer molded article, comprising a step of laminating a first mask with a plurality of openings formed therein and a second mask with a plurality of openings formed therein and having a mean opening diameter that is larger than the mean opening diameter of the first mask, on a polymer molded article, and a step of forming through-holes in the polymer molded article by dry etching from the second mask side.
    Type: Application
    Filed: October 15, 2008
    Publication date: February 24, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Kazuyuki Yamane, Yuki Hokari, Toshihiko Ono, Takeshi Saitou
  • Publication number: 20110008578
    Abstract: A method for producing a polymer molded body, comprising a step of forming a recess in a polymer structure containing a polyglycolic acid by dry etching the polymer structure at a vacuum degree of 50 mTorr or less, an output of 1-6 W and a current of 3 mA or less.
    Type: Application
    Filed: January 19, 2009
    Publication date: January 13, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Kazuyuki Yamane, Takeshi Saitou, Yuki Hokari
  • Publication number: 20100286317
    Abstract: A polypropylene resin composition containing a resin component composed of 55 to 99% by mass of polypropylene and 1 to 45% by mass of polyglycolic acid, and a reactive compatibilizing agent in a proportion of 0.3 to 30 parts by mass per 100 parts by mass of the resin component; a formed product composed of the polypropylene resin composition, wherein a dispersed phase of the polyglycolic acid residing in the morphology that the polyglycolic acid is dispersed as individually independent thin films exists in a matrix of the polypropylene; and a production process of the formed product.
    Type: Application
    Filed: December 10, 2008
    Publication date: November 11, 2010
    Applicant: Kureha Corporation
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Nanako Kuruhara, Takaya Noguchi
  • Publication number: 20100215858
    Abstract: A polyglycolic acid resin-based multilayer sheet is formed by laminating a biological polymer substrate sheet and a polyglycolic acid resin with each other via an aqueous adhesive layer. The multilayer sheet is formed of biodegradable materials as a whole and allows recovery of paper, etc. alone, as desired, by preferential decomposition of the resin, thus being suitable as a packaging material stock for food container, etc.
    Type: Application
    Filed: April 21, 2010
    Publication date: August 26, 2010
    Applicant: KUREHA CORPORATION
    Inventors: Kazuyuki YAMANE, Yukichika Kawakami, Yuki Hokari
  • Publication number: 20100093948
    Abstract: An aromatic polyester resin molded product, including: a matrix of 99-70 wt. parts of an aromatic polyester resin, and a disperse phase of 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin present in the matrix, wherein the molded product exhibits an oxygen permeability in its thickness direction which is in a range of 55-85% of a minimum gas permeability P0 determined by formula (1) below (Nielsen's theoretical formula): P0=P1×?1/(1+(L/2W)×?2) ??(1), wherein L denotes a longer axis of the polyglycolic acid resin disperse phase; W denotes a shorter axis (thickness) of the polyglycolic acid resin disperse phase; P1 denotes an oxygen permeability of the aromatic polyester resin in an oriented and crystallized state; ?1 denotes a volumetric fraction of the aromatic polyester resin; and ?2 denotes a volumetric fraction of the polyglycolic acid resin.
    Type: Application
    Filed: January 22, 2008
    Publication date: April 15, 2010
    Applicant: KUREHA CORPORATION
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi
  • Publication number: 20100087589
    Abstract: An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the aromatic polyester resin is an aromatic polyester resin polymerized with an antimony compound (catalyst), the polyglycolic acid resin is a polyglycolic acid resin obtained by ring-opening polymerization of glycolide, and the composition further contains a metal-deactivating agent in a proportion of 17-500 mol. % with respect to the antimony in the aromatic polyester resin. As a result, gas generation during the melt-processing of a composition obtained by adding a relatively small amount of polyglycolic acid resin to an aromatic polyester resin is effectively suppressed to provide an aromatic polyester resin composition with a good gas-barrier property.
    Type: Application
    Filed: January 22, 2008
    Publication date: April 8, 2010
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi
  • Publication number: 20100063219
    Abstract: An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 weight parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the composition is characterized by a transesterification rate CTE (%) of 20-60% determined by formula (1) below based on a peak integration ratio of methylene group in polyglycolic acid appearing at ?4.87 ppm with reference to tetramethylsilane according to 1H-NMR measurement: CTE(%)=(1?I(B)/I(A))×100 ??(1), wherein I (A): a peak integration ratio of the methylene group of the polyglycolic acid main chain with respect to the alkylene group of the aromatic polyester main chain calculated from the components weight ratio; and I (B): a peak integration ratio of the methylene group of polyglycolic acid main chain to the alkylene group of the aromatic polyester main chain in the resin composition.
    Type: Application
    Filed: January 22, 2008
    Publication date: March 11, 2010
    Inventors: Hiroyuki Sato, Kazuyuki Yamane, Yuki Hokari, Fuminori Kobayashi, Toshihiko Ono
  • Publication number: 20090298979
    Abstract: A method of controlling a moisture resistance of polyglycolic acid resin, by controlling a total carboxyl group-source concentration including a contribution of residual glycolide. As a result, a moisture resistance governing the change of strength with time of the polyglycolic acid resin is controlled at a good accuracy.
    Type: Application
    Filed: November 22, 2006
    Publication date: December 3, 2009
    Inventors: Hiroyuki Sato, Yuki Hokari, Kazuyuki Yamane, Fuminori Kobayashi
  • Publication number: 20090081396
    Abstract: There is provided a laminate sheet which is excellent in oxygen-barrier property and moisture resistance, biodegradable as a whole and therefore suitable as a base material for packaging materials, such as food containers. The laminate sheet is formed by laminating a water-containable and biodegradable polymer substrate sheet or a precursor thereof in a water-containing state with a layer of polyglycolic acid resin having a residual monomer content below 0.5 wt. % to form a laminate, and subjecting the laminate to bonding and forming under heat and pressure.
    Type: Application
    Filed: March 27, 2006
    Publication date: March 26, 2009
    Applicant: KUREHA CORPORATION
    Inventors: Yuki Hokari, Kazuyuki Yamane, Juichi Wakabayashi, Takehisa Suzuki
  • Patent number: 7501464
    Abstract: For producing an aliphatic polyester resin composition containing a thermal stabilizer and a carboxyl group-capping agent, the aliphatic polyester resin is first mixed in a hot-melt state with the thermal stabilizer and then mixed in a hot-melt state with the carboxyl group-capping agent. As a result thereof, the resultant aliphatic polyester resin composition is provided with better moisture resistance and noticeably improved heat resistance (less coloring) than in the case where these additives are simultaneously added to effect the hot-melt mixing.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: March 10, 2009
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Fumio Akutsu, Fuminori Kobayashi, Yuki Hokari